Having diagnosed the problem with my Bulova Accutron (the component coil has had it), I went on eBay and bought myself another broken Accutron – this one was humming, but didn’t move the hands. An ideal candidate for my project…
I take my “donor” watch apart and remove the coils. The one on the left is the component coil I need.
I put the tuning fork and coils back in.
Next, the wheels go in. I oil all jewels bar the ones for the index wheel (the smallest wheel at the bottom), which doesn’t get any oil. The danger of oil getting on the serrated edge is too high, so Bulova recommends not oiling those jewels.
Correction: Bulova actually recommends oiling the index wheel pivots – I must have read that somewhere else. So please go ahead and oil them on your Bulova. Careful about getting oil on the wheel itself, though.
As the jewels are capped, they have to be oiled before the bridge goes in.
The next step is a bit fiddly – aligning all the wheel pinions so the sit properly in their jewels. I use a small oiler to nudge them in.
Bridge in place, battery in, watch humming! Time to adjust the pawls so that the index wheel moves properly.
This little video shows how the two fingers engage in the index wheel and drive it.
No I reassemble the bottom plate with the date ring.
The movement goes into the case.
This has to be the coolest watch in my collection. Having grown up in the 60s, for me, this is space travel on a stick!
I’ve worn it for 12 hours now, and it’s 1 second slow. I’ll let it run for a week before I get on to the fine adjustment.
The Accutron 218 was manufactured between 1965 and 1972. Mine has the date code N0, so it was made in 1970.